On 2024/12/17 16:44, Jan Beulich wrote:
> On 17.12.2024 09:22, Chen, Jiqian wrote:
>> On 2024/12/16 19:24, Jan Beulich wrote:
>>> On 13.12.2024 06:42, Jiqian Chen wrote:
+static int cf_check init_rebar(struct pci_dev *pdev)
+{
+uint32_t ctrl;
+unsigned int rebar_offset,
On 17.12.2024 09:20, Chen, Jiqian wrote:
> On 2024/12/16 18:24, Roger Pau Monné wrote:
>> On Fri, Dec 13, 2024 at 01:42:32PM +0800, Jiqian Chen wrote:
>>> +if ( !is_hardware_domain(pdev->domain) )
>>> +{
>>> +printk("ReBar is not supported for domUs\n");
>>
>> This needs a bit more
On 17.12.2024 09:22, Chen, Jiqian wrote:
> On 2024/12/16 19:24, Jan Beulich wrote:
>> On 13.12.2024 06:42, Jiqian Chen wrote:
>>> +static int cf_check init_rebar(struct pci_dev *pdev)
>>> +{
>>> +uint32_t ctrl;
>>> +unsigned int rebar_offset, nbars;
>>> +
>>> +rebar_offset = pci_find_ex
On 2024/12/16 19:24, Jan Beulich wrote:
> On 13.12.2024 06:42, Jiqian Chen wrote:
>> --- /dev/null
>> +++ b/xen/drivers/vpci/rebar.c
>> @@ -0,0 +1,130 @@
>> +/* SPDX-License-Identifier: GPL-2.0-only */
>> +/*
>> + * Copyright (C) 2024 Advanced Micro Devices, Inc. All Rights Reserved.
>> + *
>> + *
On 2024/12/16 18:24, Roger Pau Monné wrote:
> On Fri, Dec 13, 2024 at 01:42:32PM +0800, Jiqian Chen wrote:
>> Some devices, like discrete GPU of amd, support resizable bar
>> capability, but vpci of Xen doesn't support this feature, so
>> they fail to resize bars and then cause probing failure.
>>
On 13.12.2024 06:42, Jiqian Chen wrote:
> --- /dev/null
> +++ b/xen/drivers/vpci/rebar.c
> @@ -0,0 +1,130 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * Copyright (C) 2024 Advanced Micro Devices, Inc. All Rights Reserved.
> + *
> + * Author: Jiqian Chen
> + */
> +
> +#include
> +#i
On Mon, Dec 16, 2024 at 11:30:22AM +0100, Jan Beulich wrote:
> On 16.12.2024 11:24, Roger Pau Monné wrote:
> > On Fri, Dec 13, 2024 at 01:42:32PM +0800, Jiqian Chen wrote:
> >> +static int cf_check init_rebar(struct pci_dev *pdev)
> >> +{
> >> +uint32_t ctrl;
> >> +unsigned int rebar_offset
On 16.12.2024 11:24, Roger Pau Monné wrote:
> On Fri, Dec 13, 2024 at 01:42:32PM +0800, Jiqian Chen wrote:
>> +static int cf_check init_rebar(struct pci_dev *pdev)
>> +{
>> +uint32_t ctrl;
>> +unsigned int rebar_offset, nbars;
>> +
>> +rebar_offset = pci_find_ext_capability(pdev->sbdf,
On Fri, Dec 13, 2024 at 01:42:32PM +0800, Jiqian Chen wrote:
> Some devices, like discrete GPU of amd, support resizable bar
> capability, but vpci of Xen doesn't support this feature, so
> they fail to resize bars and then cause probing failure.
>
> According to PCIe spec, each bar that supports
Some devices, like discrete GPU of amd, support resizable bar
capability, but vpci of Xen doesn't support this feature, so
they fail to resize bars and then cause probing failure.
According to PCIe spec, each bar that supports resizing has
two registers, PCI_REBAR_CAP and PCI_REBAR_CTRL. So, add
h
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